Jay Blahnik, one of the lead directors behind the health and fitness functionality in iOS 8 and the Apple Watch, is continuing to host events at Apple Stores. At the end of April, Blahnik held an interview with Christy Turlington Burns at an Apple Store in the United Kingdom, and now Blahnik is making his way to Australia and Asia. Late last week, Blahnik held a Q/A session in Australia with personal trainer Michelle Bridges. Here are videos of Blahnik discussing the importance of walking along with other health tips with Bridges:

Permanent or temporary changes to your skin, such as some tattoos, can also impact heart rate sensor performance. The ink, pattern, and saturation of some tattoos can block light from the sensor, making it difficult to get reliable readings.

Apple Watch owners on Reddit and Twitter have been posting conflicting reports and video, some showing that the heart-rate functionality works fine with their tattoos, others showing either no reading at all or erratic readings … expand full story